class_docstr: Abstract class that defines various tests for topologies
  
  Whenever a topology inherits from ABCTestTopology,
  you don't need to write down all tests anymore. Instead, you can just
  specify all required fixtures in the test suite.
docstr: Return an instance of the topology
docstr_tok: ["Return","an","instance","of","the","topology"]
code: def topology(self):
      """Return an instance of the topology"""
      raise NotImplementedError("NotImplementedError::topology")
  
file_path: pyswarms/tests/backend/topology/abc_test_topology.py
imports: import abc
  import pytest
label_desc: Use image node_id 1 for calling the ABCTestTopology obj's underlying member method code with example usage: obj.topology() without return types